王帅, 梁领帅, 李书芳.基于EBG结构的2.45 GHz可穿戴天线设计[J].河南理工大学学报（自然科学版）,2021,40(6):140-148.

WANG S, LIANG L S, LI S F.Design of 2.45 GHz wearable antenna based on EBG structure[J].Journal of Henan Polytechnic University(Natural Science) ,2021,40(6):140-148.

基于EBG结构的2.45 GHz可穿戴天线设计

王帅1, 梁领帅1, 李书芳2

1.河南理工大学 电气工程与自动化学院，河南 焦作 454000;2.北京邮电大学 信息与通信工程学院，北京 100876

摘要:针对现有可穿戴天线SAR值（比吸收率）较高问题，采用传统天线与EBG结构（电磁带隙结构）相结合的方法，使用常见的牛仔布料和毛毡布料分别作为天线介质基板材料和EBG 结构基板材料，同时对天线结构和EBG结构的参数逐一进行优化。设计的天线工作频带为 2. 34~2.76 GHz，完全覆盖了 ISM频段2.420 0~2.483 5 GHz（免费频段），同时中心频率2.6 GHz 处的S_u（回波损耗）值为-33.5 dB，其中-10 dB左右的带宽为0.42 GHz，最后通过HFSS软件建立人体组织模型进行仿真。结果表明，设计的天线结构合理稳定，具有良好的回波损耗性能和较宽的带宽，SAR值由原来的9.6 W/g降至0.48 W/g，大幅降低了天线对人体的辐射。研究结果可用于无线体域网的研究及实际应用。

关键词:电磁带隙结构;可穿戴天线;比吸收率;HFSS仿真;无线体域网

doi:10.16186/j.cnki.1673-9787.2020020051

基金项目:国家科技重大专项项目（2013ZX03005011 ）

收稿日期:2019/09/02

修回日期:2020/10/15

出版日期:2021/11/15

Design of 2.45 GHz wearable antenna based on EBG structure

WANG Shuai1, LIANG Lingshuai1, Li Shufang 2

1.School of Electrical Engineering and Automation， Henan Polytechnic University， Jiaozuo  454000 ， Henan， China;2.School of Information and Communications Engineering， Beijing University of Posts and Telecommunications， Beijing  100876 ， China

Abstract: To solve the problem of high SAR value of the existing wearable antennas ， the method of combining antenna and EBG structure（ electromagnetic band gap structure ） was adopted. Common denim fabric and felt fabric were used as antenna dielectric substrate and EBG structure substrate respectively with the antenna and EBG structure parameters being optimized. The antenna operating frequency band designed in this paper was in the range of 2.34~2.76 CHz， completely covering the ISM band 2.420 0 ~2.483 5 CHz.The S_u（ Returnloss） was - 33.5 dB at the center frequency of 2.6 GHz， and the bandwidth of - 10 dB was 0.42 GHz. Finally ， the human tissue model was established by HFSs software. The simulation results showed that the antenna structure designed in this paper was reasonable and stable with a good S_u， performance and a wide bandwidth. Moreover， The SAR value reduced from 9.6 W/g to 0.48 W/g， greatly reducing the radiation value of the antenna to the human body. The research results could be used in the research and practical application of the wireless body area networks.

Key words:electromagnetic band gap structure;wearable antenna;specific absorption rate;HFSs simulation;

 基于EBG结构的2.45 GHz可穿戴天线设计_王帅.pdf